From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: From: "ZINKEVICIUS,MATT (HP-Loveland,ex1)" Subject: RE: 2.4.6pre3: kswapd dominating CPU Date: Mon, 25 Jun 2001 15:02:02 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: owner-linux-mm@kvack.org Return-Path: To: 'Jens Axboe' , linux-mm@kvack.org List-ID: > WIth a machine spec'ed like that, you might want to try with the > zero-bounce patches for highmem machines. Running out of memory and > still requiring low mem bounce buffers can get ugly -- the > patches won't > solve any vm issues, but they should solve the problem for you (and > boost your specsfs performance a good deal). > > Haven't had time to update to 2.4.6-pre3 yet, if these don't apply let > me know: > > *.kernel.org/pub/linux/kernel/people/axboe/patches/2.4.5/block > -highmem-all-4.bz2 We tried your block-highmem patch for 2.4.6pre1 (the 2.4.5 one you suggested didn't patch cleanly). Sadly the kernel is unbootable (stops at "uncompressing kernel..."). If you give as an updated patch for 2.4.6pre3 we will be happy to try it! > Dunno what I/O controller you used... Qlogic fibre channel card (kernel's qlogicfc driver) --Matt PS: We also have tried Andrea's 2.4.6pre3aa2 patch. kswapd/kupdated still runs but at much less CPU utilization (30%-70%) but for much longer periods having an overall worsening effect. It also breaks fsync which in turn breaks lots of things (lilo, etc). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/